tree-wide: add global ascii_isdigit() + ascii_isalpha()

We now have a local implementation in string-util-fundamental.c, but
it's useful at a lot of other places, hence let's give it a more
expressive name and share it across the tree.

Follow-up for: 8d9156660d6958c8d63b1d44692968f1b5d33920

1 files changed, 3 insertions, 3 deletions

diff --git a/src/shared/device-nodes.c b/src/shared/device-nodes.c
index ec5613ac58..40e469379f 100644
--- a/src/shared/device-nodes.c
+++ b/src/shared/device-nodes.c
@@ -5,13 +5,13 @@
 #include <string.h>
 
 #include "device-nodes.h"
+#include "string-util.h"
 #include "utf8.h"
 
 int allow_listed_char_for_devnode(char c, const char *white) {
         return
-                (c >= '0' && c <= '9') ||
-                (c >= 'A' && c <= 'Z') ||
-                (c >= 'a' && c <= 'z') ||
+                ascii_isdigit(c) ||
+                ascii_isalpha(c) ||
                 strchr("#+-.:=@_", c) ||
                 (white && strchr(white, c));
 }